Radially averaged power spectrum of 2D real-valued matrix
Computes and plots radially averaged PSD of 2-D real matrix with a given spatial resolution.
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The radially averaged power spectrum (RAPS) is the direction-independent mean spectrum, i.e. the average of all possible directional power spectra. The radially averaged power spectrum provides a convenient means to view and compare information contained in 2-D spectra in 1-D. This function computes and plots the RAPS of an input matrix (does not consider corner values outside averaging radius). The image can be rectangular but must be 2-D (e.g., multi-color channel data is not supported). The spatial resolution of the data is also specified.
Cite As
Evan Ruzanski (2026). Radially averaged power spectrum of 2D real-valued matrix (https://www.mathworks.com/matlabcentral/fileexchange/23636-radially-averaged-power-spectrum-of-2d-real-valued-matrix), MATLAB Central File Exchange. Retrieved .
General Information
- Version 1.5.0.0 (2.09 KB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 1.5.0.0 | Clarified restrictions on input to the file description (e.g., multi-channel data from JPG, etc. is not supported) |
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| 1.4.0.0 | Added feature to handle odd/even dimensionality differences of input matrix |
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| 1.3.0.0 | Fixed bug in x-axis of plot; preallocated memory for axes label cells; removed minor ticks from y-axis; cleaned up comments. |
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| 1.2.0.0 | Rectangular matrices can now be input; spatial resolution can be specified. |
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| 1.1.0.0 | The radially averaged power spectrum provides a convenient means to view and compare information contained in 2D spectra in 1D. |
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| 1.0.0.0 |
